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cleanup client/selector/lookup (#1937)

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* cleanup client/selector/lookup

* add mdns router, remove registry from client

* fix roundtripper

* remove comment

* fix compile issue

* fix mucp test

* fix api router
This commit is contained in:
Asim Aslam
2020-08-17 22:44:45 +01:00
committed by GitHub
parent 7135787b78
commit 50ec6c748f
17 changed files with 398 additions and 418 deletions
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155
client/mucp/mucp.go
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@@ -14,17 +14,11 @@ import (
raw "github.com/micro/go-micro/v3/codec/bytes"
"github.com/micro/go-micro/v3/errors"
"github.com/micro/go-micro/v3/metadata"
"github.com/micro/go-micro/v3/registry"
"github.com/micro/go-micro/v3/transport"
"github.com/micro/go-micro/v3/util/buf"
"github.com/micro/go-micro/v3/util/pool"
)
// NewClient returns a new micro client interface
func NewClient(opts ...client.Option) client.Client {
return newClient(opts...)
}
type rpcClient struct {
once atomic.Value
opts client.Options
@@ -32,7 +26,8 @@ type rpcClient struct {
seq uint64
}
func newClient(opt ...client.Option) client.Client {
// NewClient returns a new micro client interface
func NewClient(opt ...client.Option) client.Client {
opts := client.NewOptions(opt...)
p := pool.NewPool(
@@ -68,7 +63,7 @@ func (r *rpcClient) newCodec(contentType string) (codec.NewCodec, error) {
return nil, fmt.Errorf("Unsupported Content-Type: %s", contentType)
}
func (r *rpcClient) call(ctx context.Context, node *registry.Node, req client.Request, resp interface{}, opts client.CallOptions) error {
func (r *rpcClient) call(ctx context.Context, addr string, req client.Request, resp interface{}, opts client.CallOptions) error {
msg := &transport.Message{
Header: make(map[string]string),
}
@@ -92,16 +87,9 @@ func (r *rpcClient) call(ctx context.Context, node *registry.Node, req client.Re
// set the accept header
msg.Header["Accept"] = req.ContentType()
// setup old protocol
cf := setupProtocol(msg, node)
// no codec specified
if cf == nil {
var err error
cf, err = r.newCodec(req.ContentType())
if err != nil {
return errors.InternalServerError("go.micro.client", err.Error())
}
cf, err := r.newCodec(req.ContentType())
if err != nil {
return errors.InternalServerError("go.micro.client", err.Error())
}
dOpts := []transport.DialOption{
@@ -112,7 +100,7 @@ func (r *rpcClient) call(ctx context.Context, node *registry.Node, req client.Re
dOpts = append(dOpts, transport.WithTimeout(opts.DialTimeout))
}
c, err := r.pool.Get(node.Address, dOpts...)
c, err := r.pool.Get(addr, dOpts...)
if err != nil {
return errors.InternalServerError("go.micro.client", "connection error: %v", err)
}
@@ -185,7 +173,7 @@ func (r *rpcClient) call(ctx context.Context, node *registry.Node, req client.Re
return nil
}
func (r *rpcClient) stream(ctx context.Context, node *registry.Node, req client.Request, opts client.CallOptions) (client.Stream, error) {
func (r *rpcClient) stream(ctx context.Context, addr string, req client.Request, opts client.CallOptions) (client.Stream, error) {
msg := &transport.Message{
Header: make(map[string]string),
}
@@ -206,16 +194,9 @@ func (r *rpcClient) stream(ctx context.Context, node *registry.Node, req client.
// set the accept header
msg.Header["Accept"] = req.ContentType()
// set old codecs
cf := setupProtocol(msg, node)
// no codec specified
if cf == nil {
var err error
cf, err = r.newCodec(req.ContentType())
if err != nil {
return nil, errors.InternalServerError("go.micro.client", err.Error())
}
cf, err := r.newCodec(req.ContentType())
if err != nil {
return nil, errors.InternalServerError("go.micro.client", err.Error())
}
dOpts := []transport.DialOption{
@@ -226,7 +207,7 @@ func (r *rpcClient) stream(ctx context.Context, node *registry.Node, req client.
dOpts = append(dOpts, transport.WithTimeout(opts.DialTimeout))
}
c, err := r.opts.Transport.Dial(node.Address, dOpts...)
c, err := r.opts.Transport.Dial(addr, dOpts...)
if err != nil {
return nil, errors.InternalServerError("go.micro.client", "connection error: %v", err)
}
@@ -356,6 +337,34 @@ func (r *rpcClient) Call(ctx context.Context, request client.Request, response i
rcall = callOpts.CallWrappers[i-1](rcall)
}
// use the router passed as a call option, or fallback to the rpc clients router
if callOpts.Router == nil {
callOpts.Router = r.opts.Router
}
if callOpts.Selector == nil {
callOpts.Selector = r.opts.Selector
}
// inject proxy address
// TODO: don't even bother using Lookup/Select in this case
if len(r.opts.Proxy) > 0 {
callOpts.Address = []string{r.opts.Proxy}
}
// lookup the route to send the reques to
// TODO apply any filtering here
routes, err := r.opts.Lookup(ctx, request, callOpts)
if err != nil {
return errors.InternalServerError("go.micro.client", err.Error())
}
// balance the list of nodes
next, err := callOpts.Selector.Select(routes)
if err != nil {
return err
}
// return errors.New("go.micro.client", "request timeout", 408)
call := func(i int) error {
// call backoff first. Someone may want an initial start delay
@@ -369,36 +378,14 @@ func (r *rpcClient) Call(ctx context.Context, request client.Request, response i
time.Sleep(t)
}
// use the router passed as a call option, or fallback to the rpc clients router
if callOpts.Router == nil {
callOpts.Router = r.opts.Router
}
// use the selector passed as a call option, or fallback to the rpc clients selector
if callOpts.Selector == nil {
callOpts.Selector = r.opts.Selector
}
// inject proxy address
if len(r.opts.Proxy) > 0 {
callOpts.Address = []string{r.opts.Proxy}
}
// lookup the route to send the request via
route, err := client.LookupRoute(request, callOpts)
if err != nil {
return err
}
// pass a node to enable backwards comparability as changing the
// call func would be a breaking change.
// todo v3: change the call func to accept a route
node := &registry.Node{Address: route.Address, Metadata: route.Metadata}
// get the next node
node := next()
// make the call
err = rcall(ctx, node, request, response, callOpts)
// record the result of the call to inform future routing decisions
r.opts.Selector.Record(*route, err)
r.opts.Selector.Record(node, err)
return err
}
@@ -458,6 +445,34 @@ func (r *rpcClient) Stream(ctx context.Context, request client.Request, opts ...
default:
}
// use the router passed as a call option, or fallback to the rpc clients router
if callOpts.Router == nil {
callOpts.Router = r.opts.Router
}
if callOpts.Selector == nil {
callOpts.Selector = r.opts.Selector
}
// inject proxy address
// TODO: don't even bother using Lookup/Select in this case
if len(r.opts.Proxy) > 0 {
callOpts.Address = []string{r.opts.Proxy}
}
// lookup the route to send the reques to
// TODO apply any filtering here
routes, err := r.opts.Lookup(ctx, request, callOpts)
if err != nil {
return nil, errors.InternalServerError("go.micro.client", err.Error())
}
// balance the list of nodes
next, err := callOpts.Selector.Select(routes)
if err != nil {
return nil, err
}
call := func(i int) (client.Stream, error) {
// call backoff first. Someone may want an initial start delay
t, err := callOpts.Backoff(ctx, request, i)
@@ -470,36 +485,14 @@ func (r *rpcClient) Stream(ctx context.Context, request client.Request, opts ...
time.Sleep(t)
}
// use the router passed as a call option, or fallback to the rpc clients router
if callOpts.Router == nil {
callOpts.Router = r.opts.Router
}
// use the selector passed as a call option, or fallback to the rpc clients selector
if callOpts.Selector == nil {
callOpts.Selector = r.opts.Selector
}
// inject proxy address
if len(r.opts.Proxy) > 0 {
callOpts.Address = []string{r.opts.Proxy}
}
// lookup the route to send the request via
route, err := client.LookupRoute(request, callOpts)
if err != nil {
return nil, err
}
// pass a node to enable backwards compatability as changing the
// call func would be a breaking change.
// todo v3: change the call func to accept a route
node := &registry.Node{Address: route.Address, Metadata: route.Metadata}
// get the next node
node := next()
// perform the call
stream, err := r.stream(ctx, node, request, callOpts)
// record the result of the call to inform future routing decisions
r.opts.Selector.Record(*route, err)
r.opts.Selector.Record(node, err)
return stream, err
}